A rare complication of infective endocarditis is pseudoaneurysm of the arterial wall. Aneurysms arise either from occlusion of vessels by septic emboli with secondary arteritis and vessel wall destruction or from bacteremic seeding of the vessel wall through the vasa vasorum. This paper reports on what the authors believe to be the first case of endocarditis presenting as pseudoaneurysm of the bilateral popliteal arteries.
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